Ice-tank.



INVENTUR ATTORNEY PATENTED AUG. 2, 1904. B. P. DALY.

ICE TANK.

APPLIQATION FILED APB. 15. 1903.

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UNITED STATES Patented August 2, 1904.

BENJAMIN FRY DALY, OF NEY YORK, N. Y.

ICE-TANK.

SPECIFICATION forming part of Letters Patent No. 766,600, dated August 2, 1904- Application tiled April l5, 1903.

To (LIZ whom, it may con/cern:

Be it known that I, BENJAMIN FRY DALY, a citizen of the United States of America, and a resident of the borough of Brooklyn, city of New York, county of Kings, State of New York, have invented certain new and useful Improvements in Ice-Tanks, of which the following is a specilication.

This invention relates to ice-tanks; and its object is the production of tanks in which ice can be economically frozen and from which it can be easily removed Without fracture.

Referring to the drawings, Figure l represents a plan view of my tank with its appurtenances. Fig. 2 shows a partial section of Fig. l on theline '.11 w. Fig. 3 isapartial section of Fig. 2 on the line z/ y. Fig. 4. represents a partial section of Fig. 2 on the line t t. Fig. shows a partial front view of Fig. l with a section of an air fore-cooler added thereto.

The tank is shown at A and is divided into sections B by the air-tight cells D. lVater to be frozen is introduced into the sections B, and the cells D contain suitable means for circulating' a refrigerant. The tank A comprises the bottom plate u, back plate a2, and a plate at each end, as M. The cells D are formed with the plates (I, extending from the plates a and a2 of the tank, the front plates c3, and covers (if.

A pipe E, conveying' a refrigerant, connects with the coils E', contained in the cells D. The said coils at their lower ends connect with the pipe E2, which latter' leads to a coil E3, contained in an air fore-cooler F, and from the coil E:i there extends the pipe E". A by-pass pipe K with valves ffgf3 is connected with the pipes E2 and E".

Combined supports and division-plates H carry the coils E and divide the cells D into sections (Z2 Z3 The said supports H are made in halves /i il., and at the junction of the said halves are formed apertures i for the convolutions of the coils Ef and apertures if to connect the sections Z2 Z3 d". Rivets h3 connect the halves of the plates H and cells D together. Stufiing-boxes l l are secured to the plates a3 of the cells D for the ends of Serial No. 152,681. (No model.)

the coils E. Suitable valves e and e2 are connected to the pipes E and An air-pipe G enters the fore-coolerF and has connected therewith the valve An outlet-pipe G extends from the foro-cooler and is connected with the pipes G2, having perforations g, the said pipes G2 being' supported in the cells D. Pipes G3, with perforations g, are located in the lower portions of the cells and connect with a pipe G* on the outside of the tank. Valves e3 e* are connected with the pipes G/ and G.

My invention may be modified by dispensing with the supports H and allowing the plates (Z of the cells D to hug the coils E.

To operate my invention, the sections B of the tank are filled with the liquid to be frozen and a refrigerant is introduced into the coils E by way of the pipe E, when ice will be formed in the said sections on the sides of the cells D. Then the refrigerant is cut off by means of valve e and air is made to enter the fore-cooler F, where by lowering its temperature by means of the refrigerant in the coil E3 any moisture in said air is eliminated. rlhe dry air then enters the pipe G and from thence is led to the Variousperforated pipes G2, from which latter it emerges into the cells D, containing' the coils E', and by virtue of the perforations h2 circulates in all portions of the said cells D.

The temperature of the air being higher than that of the ice frozen on the outside of the cells, the said ice is detached from the cells, so that it can be removed from the tank, the air being used as a thawing medium.

On the pipe G there is iitted a valve G5 or other regulating device to control the volume of air admitted into the fore-cooler F, byvirtue of which the temperature of the air as it leaves said cooler is regulated, a small amount of air being first allowed to pass through the said cooler, which quantity is augmented during the process of thawing oil' in the tank, which prevents a too rapid expansion of the metal plates comprising the cells D, which expansion is greater than that of the ice.

Having described my invention, I claiml. rlhe combination in a freezing-tank, of cells therein, coils for a refrigerant in the cells,

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a fore-cooling device, pipes for conducting air leading from the forercooling device to the said cells, means to regulate the volume of air conducted through the said pipes, and other means to cool the air in the fore-cooler by the refrigerant in the coils.

2. A freezing-tank, cells therein dividing the tank into sections, coils for a refrigerant in the cells, in combination With a fore-cooling device, pipes conveying air connecting the fore-cooling device and the cells, a coil for the refrigerant in the fore-cooler connected with the coils for the refrigerant in the cells.

3. In a freezingetank; cells dividing the tank into sections to hold the fluid to be frozen; in

combination With coils for a refrigerant in the cells; pipes on the outside of the tank to con- BENJAMIN FRY DALY.

Witnesses:

O'r'ro GREENBERG, J. GALLWrrz. 

